/* ===================================
   Weave - Timeline Slider Styles
   =================================== */

/* --- Timeline Control Panel --- */
.timeline-panel {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-gray-200);
    padding: var(--spacing-xl) var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: calc(var(--nav-height) + var(--spacing-md));
    z-index: 50;
    backdrop-filter: blur(8px);
    background: rgba(255, 255, 255, 0.97);
}

.timeline-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

/* --- Date Display --- */
.timeline-date-display {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-sm);
}

.timeline-date-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.timeline-date-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
    font-variant-numeric: tabular-nums;
    transition: color var(--transition-fast);
}

.timeline-date-value.animating {
    color: var(--color-secondary);
}

/* --- Playback Controls --- */
.timeline-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.timeline-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    color: var(--color-white);
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.timeline-btn:hover {
    background: var(--color-primary-dark);
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.timeline-btn:active {
    transform: scale(0.95);
}

.timeline-btn.playing {
    background: var(--color-secondary);
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 0 0 rgba(124, 58, 237, 0.4); }
    50% { box-shadow: 0 0 0 8px rgba(124, 58, 237, 0); }
}

.timeline-btn svg {
    width: 18px;
    height: 18px;
}

/* --- Speed Control --- */
.speed-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: var(--color-gray-100);
    border-radius: var(--radius-full);
    padding: 3px;
}

.speed-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-gray-500);
    transition: all var(--transition-fast);
    min-width: 36px;
    text-align: center;
}

.speed-btn:hover {
    color: var(--color-gray-700);
}

.speed-btn.active {
    background: var(--color-white);
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

/* --- Slider Track --- */
.timeline-slider-wrapper {
    position: relative;
    padding: var(--spacing-sm) 0;
}

/* Hide native range input but keep accessible */
.timeline-slider-hidden {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    z-index: 20;
    top: 0;
    left: 0;
    margin: 0;
}

/* Curved SVG slider */
.curved-slider {
    position: relative;
    width: 100%;
    height: 220px;
    cursor: pointer;
}

.curved-slider-svg {
    width: 100%;
    height: 100%;
    overflow: visible;
}

#curve-track-bg {
    transition: stroke var(--transition-fast);
}

#curve-track-fill {
    transition: stroke-dasharray 0.05s linear;
}

#curve-thumb {
    transition: filter var(--transition-fast);
}

#curve-thumb:hover {
    filter: drop-shadow(0 3px 8px rgba(0,0,0,0.3));
}

.timeline-slider {
    display: none;
}

/* --- Date Range Labels --- */
.timeline-range-labels {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--color-gray-400);
    font-weight: 500;
}

/* --- Node Count Indicator --- */
.timeline-stats {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-100);
}

.timeline-stat {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.timeline-stat-value {
    font-weight: 700;
    color: var(--color-gray-700);
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .timeline-panel {
        padding: var(--spacing-lg) var(--spacing-md);
        position: relative;
        top: 0;
    }

    .timeline-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .timeline-controls {
        width: 100%;
        justify-content: space-between;
    }

    .timeline-date-value {
        font-size: var(--font-size-xl);
    }

    .timeline-stats {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }
}